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Oxymercuration-Demercuration
Alkenes
Step 1 of 3
Step 1: Mercurinium Ion FormationPi electrons attack Hg²⁺, forming three-membered ringLine-angleH₂C=CHCH₃CondensedAlkene (π bond)Hg2+Hg(OAc)₂Line-angleHg(OAc)₂Condensedπ e⁻Hg2+Line-angleMercurinium ion(Hg²⁺ bridge)CondensedThree-membered ring, no rearrangement